Packaging kit, package, packaging method using packaging kit, packaging kit manufacturing apparatus, and packaging kit manufacturing method

Abstract

A packaging kit manufacturing apparatus ( 600 ) manufactures a packaging kit ( 501 ). The packaging kit manufacturing apparatus ( 600 ) includes: a film feeding section ( 610 ) that feeds a film ( 31, 32 ); a conveyance section ( 620 ) that conveys a plate-shaped member ( 510 ) such that a leading end of the plate-shaped member ( 510 ) pushes the film ( 31, 32 ); a welding section ( 640 ) that welds the film ( 31, 32 ) to form a tubular film ( 530 ); a retracting section ( 650 ) that retracts the film ( 32 ) to fold the plate-shaped member ( 510 ) along a fold line ( 21 ) before the welding section ( 640 ) welds the film ( 31, 32 ); and a lift restricting section ( 660 ) that restricts lift of the leading end of the plate-shaped member ( 510 ) when the film ( 32 ) is retracted by the retracting section ( 650 ).

The invention claimed is: 
     
       1. A packaging kit manufacturing apparatus that manufactures a packaging kit including a plate-shaped member having an upper surface with a fold line thereon and a tubular film lapped around the plate-shaped member, the packaging kit manufacturing apparatus comprising:
 a film feeding section including a conveyance roller, and configured to feed a film through rotation of the conveyance roller; 
 a conveyance section including a pushing rod and a pushing plate, and configured to convey a plate-shaped member having an upper surface with a fold line thereon such that a leading end of the plate-shaped member pushes the film through the pushing plate moving along the pushing rod, the pushing plate being in a plate shape, the pushing plate being attached to the pushing rod; 
 a welding section including a blade, and configured to weld the film to form the tubular film by bringing the blade into contact with the film; 
 a retracting section including a retraction roller, and configured to retract the film to fold the plate-shaped member along the fold line before the welding section welds the film through movement of the retracting roller; and 
 a lift restricting section including a restricting bar, and configured to restrict lift of the leading end of the plate-shaped member through the restricting bar coming into contact with the plate-shaped member when the film is retracted by the retracting section. 
 
     
     
       2. The packaging kit manufacturing apparatus according to  claim 1 , wherein
 the lift restricting section includes:
 a contact portion that comes into contact with the plate-shaped member when the film is retracted by the retracting section; and 
 a holding portion that holds the contact portion, the holding portion being capable of changing a position to hold the contact portion. 
 
 
     
     
       3. The packaging kit manufacturing apparatus according to  claim 1 , wherein
 when the film is retracted by the retracting section, the lift restricting section comes into contact with a part of the upper surface of the plate-shaped member that is closer to the leading end of the plate-shaped member than the fold line. 
 
     
     
       4. The packaging kit manufacturing apparatus according to  claim 1 , wherein
 when the film is retracted by the retracting section, the film is lapped around a part of the plate-shaped member and the lift restricting section comes into contact with a part of the plate-shaped member that is close to the leading end of the plate-shaped member and that does not overlap the film. 
 
     
     
       5. The packaging kit manufacturing apparatus according to  claim 1 , wherein
 the conveyance section includes:
 a placement section on which the plate-shaped member is placed; 
 a pushing section that pushes a trailing end of the plate-shaped member placed on the placement section to convey the plate-shaped member in a horizontal direction; and 
 a guide section that guides the plate-shaped member while restricting lift of the plate-shaped member such that the leading end of the plate-shaped member passes under the lift restricting section. 
 
 
     
     
       6. The packaging kit manufacturing apparatus according to  claim 5 , wherein
 the guide section is arranged at a position not interfering with the lift restricting section when the conveyance section completes conveyance of the plate-shaped member. 
 
     
     
       7. The packaging kit manufacturing apparatus according to  claim 1 , further comprising
 a pressing section configured to press the plate-shaped member while out of contact with the film after the conveyance section completes conveyance of the plate-shaped member. 
 
     
     
       8. The packaging kit manufacturing apparatus according to  claim 1 , wherein
 the welding section includes:
 a sealing section including a heat source; and 
 a sealing section receiving section that receives the sealing section, 
 
 the welding section welds the film by bringing the sealing section and the sealing section receiving section into contact with each other, and 
 when the film is retracted by the retracting section, a gap between the sealing section and the sealing section receiving section is larger than a thickness of the film and smaller than a thickness of the plate-shaped member. 
 
     
     
       9. A packaging kit manufacturing method for manufacturing a packaging kit including a plate-shaped member having an upper surface with a fold line thereon and a tubular film lapped around the plate-shaped member, the packaging kit manufacturing method comprising:
 preparing a film, a plate-shaped member having an upper surface with a fold line thereon, and a packaging kit manufacturing apparatus including a lift restricting section and a welding section, the lift restricting section including a restricting bar; 
 lapping the film around the plate-shaped member in a manner that the film comes into contact with the plate-shaped member from a leading end to a trailing end thereof by pushing the film with the leading end of the plate-shaped member; 
 retracting the film to fold the plate-shaped member along the fold line until lift of the leading end of the plate-shaped member is restricted by the leading end of the plate-shaped member coming into contact with the restricting rod of the lift restricting section; and 
 forming the tubular film by welding the film by the welding section. 
 
     
     
       10. A packaging kit used for packaging an article, the packaging kit comprising:
 a plate-shaped member; and 
 a tubular film lapped around the plate-shaped member, wherein 
 the plate-shaped member comprises:
 a single fold line displaced from a center of the plate-shaped member, 
 a single placement surface portion on which the article to be packaged is to be placed; and 
 a single adjacent surface portion adjacent to the placement surface portion, the placement surface portion and the adjacent surface portion being separated by the fold line, 
 
 the tubular film is lapped around the plate-shaped member such that the fold line between the placement surface portion and the adjacent surface portion extends along a longitudinal axis of a tube that the tubular film forms, and the plate-shaped member is in a state of being partially folded along the fold line, 
 the article is to be placed completely over the placement surface in a space between the placement surface portion and the tubular film in a state where the adjacent surface portion is folded relative to the placement surface portion, and 
 the article is secured by tightening the tubular film while in contact with the article in accompaniment with unfolding of the adjacent surface portion relative to the placement surface portion so the article is pressed between the tubular film and the plate-shaped member. 
 
     
     
       11. The packaging kit according to  claim 10 , wherein
 the plate-shaped member is made from a corrugated board, and 
 the fold line of the plate-shaped member is formed to traverse waves of a core sheet of the plate-shaped member. 
 
     
     
       12. The packaging kit according to  claim 10 , wherein
 the placement surface portion of the plate-shaped member has an area larger than that of the adjacent surface portion. 
 
     
     
       13. The packaging kit according to  claim 10 , wherein
 the tubular film is a stretchable film. 
 
     
     
       14. The packaging kit according to  claim 10 , wherein
 the plate-shaped member is partitioned by a sub-fold line that intersects with the fold line between the placement surface portion and the adjacent surface portion on the plate-shaped member, and has a stand-up portion adjacent to the placement surface portion with the sub-fold line therebetween, and 
 by folding the stand-up portion relative to the placement surface portion along the sub-fold line, the adjacent surface portion is unfolded relative to the placement surface portion and the tubular film is kept tightened. 
 
     
     
       15. The packaging kit according to  claim 14 , wherein
 the sub-fold line is perforated, and 
 the fold line is not perforated. 
 
     
     
       16. The packaging kit according to  claim 14 , wherein
 the plate-shaped member has two stand-up portions including the stand-up portion and an additional stand-up portion, the two stand-up portions each being defined by a corresponding one of two sub-fold lines including the sub-fold line and an additional sub-fold line that does not intersect with the sub-fold line on the plate-shaped member. 
 
     
     
       17. The packaging kit according to  claim 14 , wherein
 the stand-up portion is partitioned by an auxiliary fold line substantially parallel with the sub-fold line, and has portions defined by the auxiliary fold line therebetween, one of the portions being capable of being folded relative to the other of the portions. 
 
     
     
       18. A package comprising the packaging kit according to  claim 14  and an outer casing that accommodates the packaging kit therein, wherein
 the stand-up portion of the plate-shaped member is kept folded relative to the placement surface portion when the packaging kit is accommodated in the outer casing in a state where the stand-up portion is folded relative to the placement surface portion. 
 
     
     
       19. The package according to  claim 18 , wherein
 in a state where the packaging kit is accommodated in the outer casing, a bottom part of the packaging kit and an upper part of the stand-up portion are held in contact with or close to an inner surface of the outer casing.